公开(公告)号：US20170218232A1

公开(公告)日：2017-08-03

申请号：US15417349

申请日：2017-01-27

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito NIWA ,  Masataka NISHIWAKI ,  Noboru YOSHIDA ,  Naoaki HIGUCHI ,  Yutaka TOSAKI ,  Huairui ZHU ,  Junyi DING

IPC: C09J7/02 ,  B32B7/12 ,  B32B27/06 ,  B32B27/08 ,  B32B27/36 ,  B32B27/32 ,  C09J7/00 ,  B32B7/06

CPC classification number: B32B7/06 ,  B32B3/266 ,  B32B5/022 ,  B32B5/024 ,  B32B5/18 ,  B32B7/12 ,  B32B15/085 ,  B32B15/20 ,  B32B27/065 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/304 ,  B32B27/32 ,  B32B27/322 ,  B32B27/36 ,  B32B29/002 ,  B32B2250/02 ,  B32B2255/102 ,  B32B2255/26 ,  B32B2262/0276 ,  B32B2262/04 ,  B32B2262/062 ,  B32B2262/065 ,  B32B2262/14 ,  B32B2266/0207 ,  B32B2266/0228 ,  B32B2266/0235 ,  B32B2266/025 ,  B32B2266/0257 ,  B32B2266/0264 ,  B32B2266/0278 ,  B32B2307/50 ,  B32B2307/558 ,  B32B2307/56 ,  B32B2307/7265 ,  B32B2405/00 ,  B32B2457/00 ,  C09J7/00 ,  C09J7/10 ,  C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J2201/606 ,  C09J2203/326 ,  C09J2400/243 ,  C09J2423/046 ,  C09J2433/00

Abstract: Provided is a double-faced PSA sheet having excellent detergent resistance. The PSA sheet according to this invention comprises a PSA layer and is adhesive on both faces. The PSA sheet shows a push-peel strength of 30 N/cm2 or greater after a detergent immersion test involving immersion in a standard detergent at 40° C. for 24 hours. It also has an adhesive strength retention rate of 50% or higher, determined as the ratio of push-peel strength P2 after the detergent immersion test to push-peel strength P1 before the detergent immersion test.